Vito 116 Error code P042800 and P042627

Hello together, I have a problem with my Vito 639. maybe you can help me. -MKL lights up yellow error memory with Carly – now finds the two errors P042800 and P042627 Have found out by now that it has something to do with a temperature sensor. Can someone possibly tell me which sensor this is and where I find it? Thank you already for your help MfG Sternkutscher116